Current leads in vacuum space of cryogenic systems

✍ Scribed by Pavel Hanzelka

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 377 KB
• Volume: 39
• Category: Article
• ISSN: 0011-2275
• DOI: 10.1016/s0011-2275(99)00126-5

✦ Synopsis

Electric current leads placed in the vacuum space are often used in cryogenic systems. A complex analysis of the thermal processes in the leads is a dicult problem. Simplifying conditions were determined and a numerical procedure was written for the evaluation of the main heat ¯ows and temperature distribution. The procedure was tested using other available methods and was also veri®ed in several experiments. A satisfactory agreement between the calculated and measured data was found. Importance of the heat radiation in certain lead con®gurations was found. Some problems arose as regards the analysis of a copper conductor in a special con®guration. The solution of several factual problems concerning the current leads design is described and the results are discussed.